Rate Component Value Proration

Except for summary type rate components (which are not prorated at all), a value is specified on the rate component. The value may be a unit rate, percentage or charge. The value may be specified directly on the rate component, derived from a rate factor, derived from another rate component or calculated by an algorithm.

Regardless of where the rate component value comes from, it will be multiplied by the calculation period factor when determining the charge on a bill calculation line. Exceptions to this rule are:

• Unit rate values where the rate component's measures peak attribute is not checked.

• Percentage values.

• Rate component values derived from another rate component.

Even though the rate component values are not prorated for unit rate and percentage value types, if these rate values change during the calculation period due to a rate factor value change, rate factor value proration still applies.

Values derived from another rate component are not subject to rate value proration, as rate component value proration was already performed on the referenced rate component. Again, if the rate factor value changed on the referenced rate component, rate factor value proration still applies.